"I confirm that I acted on my own, without racist intention. Sorry if it has hurt. I withdraw the picture but it is a misunderstanding. I used an already existing monster picture,” the Twitter user said.

Additionally, the official Twitter account of “La Manif Pour Tous," @lamanifpourtous, advised followers that, “the only news and posters to take into account for the May 26 [protest] are those tweeted by this account.”

French legislators approved the bill legalizing same-sex marriage in France on April 23 after hours of heated parliamentary debates, massive demonstrations from both sides, and rising tensions in French society.

In the wake of the historic vote, France has seen an uptick in violent protests, homophobic attacks, and a stream of offensive trending Twitter hashtags.